Abstract
IN a recent communication1 we gave some evidence for the existence of penetrating showers. We have now extended these observations to the transition curves of the showers in lead and in aluminium with the same experimental arrangement. Five-fold coincidences 1, 2, 3, A, B, and the number (n) of the counters H discharged simultaneously were recorded. Due to a slight change in the counter arrangement, our present rates are about 30 per cent higher than those reported previously. The results are summarized in Table 1 and the accompanying graph.
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References
Jánossy, L., and Ingleby, P., NATURE, 145, 511 (1940).
Herzog, G., and Bostick, W. H., Phys. Rev., 58, 278 (1940).
Powell, W. M., Phys. Rev., 58, 474 (1940).
Booth, F., and Wilson, A. H., Proc. Roy. Soc., A, 175, 483 (1940).
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JÁNOSSY, L. Penetrating Cosmic Ray Showers. Nature 147, 56–57 (1941). https://doi.org/10.1038/147056a0
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DOI: https://doi.org/10.1038/147056a0
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